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Car Engine Oil Guide

All The Oil Information You Need In One Place

Selecting the correct oil for your vehicle can be a bit of a mine field. Some basic understanding of what the specifications are, and what the numbers printed on the can mean will be a help to selecting the correct oil.

Just about all modern vehicles use a multigrade oil, so what does it all mean?

If you see an expression such as 10W-40, the oil is a multigrade. This simply means that the oil falls into two viscosity grades, in this case 10W & 40. This is made possible by the inclusion of a polymer, a component which slows down the rate of thinning as the oil warms up and slows down the rate of thickening as the oil cools down. It was first developed some 50 years ago to avoid the routine of using a thinner oil in winter and a thicker oil in summer.

For a 10W-40 to attain the specification target a 10W (W = winter) the oil must have a certain maximum viscosity at low temperature. The actual viscosity and the temperature vary with the viscosity grade but in all cases the lower the number, the thinner the oil, e.g. a 5W oil is thinner than a 10W oil at temperatures encountered in UK winter conditions. This is important because a thinner oil will circulate faster on cold start, affording better engine protection.

For a 10W-40 to attain the other specification target SAE 40 the oil must fall within certain limits at 100 degC. In this case the temperature target does not vary with the viscosity grade, if there is no “W”, the measuring temperature is always 100degC. Again the lower the number the thinner the oil, a 30 oil is thinner than a 40 oil at 100 degC, which is typical of maximum bulk oil temperatures in an operating engine.

ACF-50 For Your Motorcycle

Learn how and why ACF-50 differs from (and improves on) the common multi-use spray

Plenty of motorcyclists use WD-40 or similar to try to protect their machines against dirt and road salts, the problem with this is that most aren’t waterproof, so will wash off at the first sign of rain. ACF-50 is different, read on to find out why you should be using this unique product on your pride and joy.

WD-40 – A WORKSHOP ESSENTIAL

Learn all about WD-40 – including what it is, what it is used for, and some fun facts

Multi-purpose sprays are found everywhere, from professional vehicle workshops, to home DIY’ers and mechanics. There are many brands and products so how do you know which to buy? Here we explain why you should definitely have a can of WD-40 in your home.

WD-40

Any BMW drivers out there?

When the E53 BMW X5 was first launched back in 2000, enthusiasts cried foul. They didn’t want to share their cherished blue roundel with a vehicle that would be relegated doing the school run and shopping excursions. Nevertheless, a new generation of buyers found the first generation BMW X5 to be the ideal blend of driving pleasure and practicality. By 2014, over 1.3 million copies of BMW’s midsize luxury SUV had been sold worldwide.

 

Calling all Hybrid owners!

Do you own a Hybrid, Plug-in Hybrid or PHEV?

Well, if you own either of these then it was probably for two reasons – to save money, or to help the environement. With the innovative chaps over at K&N, there is yet another way to do both. As we already know, K&N air filters exceed the lifespan of the standard OEM paper filter by as much as 30 times. But why is that important? Well, have a look below where we will outline what you have to gain from using one of their great products.